Both fighters are coming off a streak of losses at Zuffa events and are looking to compile wins on local shows for a push back to the big leagues.
Palaszewski (30-13), a 12-time competitor of the now defunct IFL, won his WEC debut last December by TKO but has lost two WEC fights in 2009. He'll face Lucas Gwaltney, a 22-year-old who trains with Steve Berger in St. Louis, Missouri.
Horn (81-19-5)'s opponent wlll be XFO mainstay and early "The Ultimate Fighter 7" contestant Mike Marrello (8-2-1). Horn snapped last month a three-fight losing streak that he compiled with the UFC when he won by submission at the Adrenaline MMA 3 event in Birmingham, Alabama.